You have 5 seconds to click on all the christmas trees you see. Have fun and be quick.
In this classic game, you have to flip over cards and match the pairs. You can open two cards at a time. If the images are the same, the cards are removed. Otherwise they flip back.
React quickly and accurately to color stimuli while ignoring conflicting word stimuli.
The game measures your reaction time and accuracy.
Under pressure of time detect which equation gives bigger result. Give as many correct answers as you can.